# -*- encoding: utf-8 -*-
#
#    Licensed under the Apache License, Version 2.0 (the "License"); you may
#    not use this file except in compliance with the License. You may obtain
#    a copy of the License at
#
#         http://www.apache.org/licenses/LICENSE-2.0
#
#    Unless required by applicable law or agreed to in writing, software
#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
#    License for the specific language governing permissions and limitations
#    under the License.

from unittest import mock

from keystoneauth1 import loading as ks_loading
from oslo_config import cfg
from oslo_config import fixture

from ironic.common import context
from ironic.common import exception
from ironic.common import keystone
from ironic.conf import auth as ironic_auth
from ironic.tests import base


class KeystoneTestCase(base.TestCase):

    def setUp(self):
        super(KeystoneTestCase, self).setUp()
        self.test_group = 'test_group'
        self.cfg_fixture.conf.register_group(cfg.OptGroup(self.test_group))
        ironic_auth.register_auth_opts(self.cfg_fixture.conf, self.test_group,
                                       service_type='vikings')
        self.config(auth_type='password',
                    group=self.test_group)
        # NOTE(pas-ha) this is due to auth_plugin options
        # being dynamically registered on first load,
        # but we need to set the config before
        plugin = ks_loading.get_plugin_loader('password')
        opts = ks_loading.get_auth_plugin_conf_options(plugin)
        self.cfg_fixture.register_opts(opts, group=self.test_group)
        self.config(auth_url='http://127.0.0.1:9898',
                    username='fake_user',
                    password='fake_pass',
                    project_name='fake_tenant',
                    group=self.test_group)

    def _set_config(self):
        self.cfg_fixture = self.useFixture(fixture.Config())
        self.addCleanup(cfg.CONF.reset)

    def test_get_session(self):
        self.config(timeout=10, group=self.test_group)
        session = keystone.get_session(self.test_group, timeout=20)
        self.assertEqual(20, session.timeout)

    def test_get_auth(self):
        auth = keystone.get_auth(self.test_group)
        self.assertEqual('http://127.0.0.1:9898', auth.auth_url)

    def test_get_auth_fail(self):
        # NOTE(pas-ha) 'password' auth_plugin is used,
        # so when we set the required auth_url to None,
        # MissingOption is raised
        self.config(auth_url=None, group=self.test_group)
        self.assertRaises(exception.ConfigInvalid,
                          keystone.get_auth,
                          self.test_group)

    def test_get_adapter_from_config(self):
        self.config(valid_interfaces=['internal', 'public'],
                    group=self.test_group)
        session = keystone.get_session(self.test_group)
        adapter = keystone.get_adapter(self.test_group, session=session,
                                       interface='admin')
        self.assertEqual('admin', adapter.interface)
        self.assertEqual(session, adapter.session)

    @mock.patch('keystoneauth1.service_token.ServiceTokenAuthWrapper',
                autospec=True)
    @mock.patch('keystoneauth1.token_endpoint.Token', autospec=True)
    def test_get_service_auth(self, token_mock, service_auth_mock):
        ctxt = context.RequestContext(auth_token='spam')
        mock_auth = mock.Mock()
        self.assertEqual(service_auth_mock.return_value,
                         keystone.get_service_auth(ctxt, 'ham', mock_auth))
        token_mock.assert_called_once_with('ham', 'spam')
        service_auth_mock.assert_called_once_with(
            user_auth=token_mock.return_value, service_auth=mock_auth)